/**
 * COOKIE存储
 * @param {String} key 键
 * @param {Object} val 值
 * @param {Number} time 时间，默认10s
 */
function setcookie(key, val, time = 10) {
    if (typeof val == 'object') val = JSON.stringify(val)
    const d = new Date
    d.setTime(d.getTime() - 1000 * 60 * 60 * 8 + 1000 * time)
    document.cookie = `${key}=${val}; expires=${d}`
}
/**
 * COOKIE获取
 * @param {String} key 
 * @returns String
 */
function getcookie(key) {
    let arr = document.cookie.split('; ')
    for (let i = 0; i <= arr.length; i++) {
        let item = arr[i]
        let tempArr = item.split('=')
        if (tempArr[0] == key) return
    }
}


/**
 * COOKIE删除
 * @param {String} key 键
 * @returns undefined
 */
function removecookie(key) {
    setcookie(key, null, -1)
}